If user profile doesn't contain language setting, default to his Google account settings.

chrome/browser/chromeos/login/user_image_manager_impl.cc

Index: chrome/browser/chromeos/login/user_image_manager_impl.cc
diff --git a/chrome/browser/chromeos/login/user_image_manager_impl.cc b/chrome/browser/chromeos/login/user_image_manager_impl.cc
index f66f0f0bc4f7388c171557d29e30bfa2ed83a301..7f478549c859145dc2f419a2af2f4cf0e20abd8f 100644
--- a/chrome/browser/chromeos/login/user_image_manager_impl.cc
+++ b/chrome/browser/chromeos/login/user_image_manager_impl.cc
@@ -644,6 +644,9 @@ void UserImageManagerImpl::OnProfileDownloadSuccess(
         user->email(), downloader->GetProfileFullName());
   }
 
+  ProfileManager::GetDefaultProfile()->
+      SetGPlusProfileLocale(downloader->GetProfileLocale());

[Nikita (slow), 2013/08/26 09:26:13]

nit: SetGPlusProfileLocale - this method needs to be renamed. This should be
called just AccountLocale (as in Google Account). We may later expand this API.

[Alexander Alekseev, 2013/09/06 19:52:08]

Done.

+
   bool requested_image = downloading_profile_image_;
   downloading_profile_image_ = false;
   if (!requested_image)
@@ -723,6 +726,9 @@ void UserImageManagerImpl::OnProfileDownloadFailure(
   AddProfileImageTimeHistogram(kDownloadFailure, profile_image_download_reason_,
                                delta);
 
+  ProfileManager::GetDefaultProfile()->
+      SetGPlusProfileLocale(downloader->GetProfileLocale());

[Nikita (slow), 2013/08/26 09:26:13]

Should this really be called in failure case?

[Alexander Alekseev, 2013/09/06 19:52:08]

Yes. I've commented it in the new patch set.

+
   // Retry download after some time if a network error has occured.
   if (reason == ProfileDownloaderDelegate::NETWORK_ERROR) {
     BrowserThread::PostDelayedTask(